Plasma ablation properties of C/C-Cu composites

被引：0

作者：

Chen, Yingbo ^{[1
]}

Li, Hong ^{[1
]}

Sun, Le ^{[1
]}

Ren, Musu ^{[1
]}

Sun, Jinliang ^{[1
]}

Yang, Min ^{[1
]}

机构：

[1] Composite Materials Research Center, Shanghai University, Shanghai,200072, China

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2014年 / 31卷 / 05期

关键词：

Copper - Carbon carbon composites;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to study the ablation properties of C/C composites influenced by copper infiltration, C/C-Cu composites were prepared by chemical vapor infiltration (CVI) and liquid pressure infiltration processes. The ablation properties of C/C-Cu composites were verified using a plasma ablation device. The results show that the preparation period is significantly shortened with the addition of Cu in C/C composites. Cu uniformly distributes in C/C composites and forms a continuous network structure. The linear ablation rate of C/C-Cu composites is lower than that of C/C composites in the initial stage within 30 s of ablation, because the melting of Cu could absorb a lot of energy and reduce the heating rate. With the ablation time increases, Cu on surface of C/C-Cu composites is blowing away by plasma flames, the sample surface of C/C-Cu composites becomes a lower density porous C/C framework. Therefore, the linear ablation rate of C/C-Cu composites increases violently, and becomes higher than C/C composites', the ablation resistance of C/C-Cu composites decreases evidently.

引用

页码：1238 / 1243